Wikipedia
WAMG
WAMG (890 AM) is a radio station in the Boston market licensed to Dedham, Massachusetts. It is owned by Gois Broadcasting. It broadcasts in Spanish, & plays Bachata, Merengue, Salsa and Pop music. WLS in Chicago is the dominant (class A) station on 890 AM; WAMG must reduce power during the nighttime hours and uses a directional antenna to protect the nighttime skywave signal of WLS.
WAMG also simulcasts its programming on WLLH (1400 AM) in Lowell and Lawrence to reach the area north of Boston and the southern part of New Hampshire.